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Annotation of 43BSD/contrib/mh/sbr/brkstring.c, revision 1.1

1.1     ! root        1: /* brkstring.c - break string into an array of strings */
        !             2: 
        !             3: #include "../h/mh.h"
        !             4: 
        !             5: 
        !             6: static char *broken[MAXARGS+1];        /* array of substring start addresses */
        !             7: 
        !             8: char  **brkstring (strg, brksep, brkterm)
        !             9: register char  *strg;
        !            10: register char  *brksep,
        !            11:                *brkterm;
        !            12: {
        !            13:     register int    bi;
        !            14:     register char   c,
        !            15:                    *sp;
        !            16: 
        !            17:     sp = strg;                 /* scan string, replacing separators with
        !            18:                                   zeroes */
        !            19: 
        !            20:     for (bi = 0; bi < MAXARGS; bi++) {
        !            21:                                /* and entering start addrs in "broken" */
        !            22:        while (brkany (c = *sp, brksep))
        !            23:            *sp++ = 0;
        !            24:        if (!c || brkany (c, brkterm)) {
        !            25:            *sp = 0;
        !            26:            broken[bi] = 0;
        !            27:            return broken;      /* terminator found, finish up */
        !            28:        }
        !            29: 
        !            30:        broken[bi] = sp;        /* set next start addr */
        !            31:        while ((c = *++sp) && !brkany (c, brksep) && !brkany (c, brkterm))
        !            32:                continue;
        !            33:     }
        !            34:     broken[MAXARGS] = 0;       /* reached limit of MAXARGS substrings */
        !            35: 
        !            36:     return broken;
        !            37: }
        !            38: 
        !            39: 
        !            40: static  brkany (chr, strg)     /* returns 1 if chr in strg, 0 otherwise  */
        !            41: register char   chr,
        !            42:                *strg;
        !            43: {
        !            44:     register char  *sp;
        !            45: 
        !            46:     if (strg)
        !            47:        for (sp = strg; *sp; sp++)
        !            48:            if (chr == *sp)
        !            49:                return 1;
        !            50:     return 0;
        !            51: }

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